Nut-lock.



J. w. VAN ZILE.

NUT LOCK.

Patented. Oct. 26, 1915.

APPLICATION FILED [156.29. 1914.

um ll" 60-, WASHINGTON JOHN w. van ZILE, or Honorees,

1\T UT-LOGK.

Specification "of Letters Patent.

Patented Uct. 26, 1915.

Application filed December 29, 1914. Serial No. 879,519.

To all whom it may concern:

Be it known that 1, JOHN W. VAN ZILE, a citizen of the United States,residing at Hohokus, in the county of Bergen and State of New Jersey,have invented certain new and useful Improvements in Nut-Locks, of whichthe following is a specification.

This invention relates to nut locks, and more particularly to that classof nut locks in which the locking operation is accomplished by means ofa toothed key.

An object of the invention is to provide a nut lock which is applicableto standard size nuts with but slight alteration thereto, and which isreadily applied and detached, and also capable of being repeatedly used.

V'Jith the foregoing and other objects in view the invention consists inthe novel features of construction, combination and arrangement of partsas will be hereinafter more fully described, illustrated in theaccompanying drawings and claimed.

In the drawings Figure 1 is a sectional view of a nut applied to a boltand showing the improved locking means fastened thereto; Fig. 2 is aplan view showing the bolt in section; Fig. 3 is a perspective view ofthe nut; Fig. 4L is a perspective view of the locking key; Fig. 5 is aperspective view of a modified form of locking key.

Referring to the drawings by numerals, 1 designates a bolt which isadapted to threadedly receive a nut 2 This nut may be of any ordinaryconstruction and is provided on the upper face thereof with a recess 3.This recess is disposed to one side of the bore of the nut and opensthereinto. The recess further extends to a point adjacent the op positesidesof the nut, and adjacent the edge of the nut which is opposite tothe point of communication with the bore is provided with an opening 4:which forms a means of communication between the recess and the side ofthe nut.

A locking key 5 is adapted to be seated in the recess 3, is of slightlyless Width than the recess and on the inner face thereof is providedwith an arcuately shaped recess 6, this recess is of a curvatureextending to the curvature of the bolt and is provided with teeth 7 forengagement with the bolt when the key and nut are applied thereto. A lug8 is formed 011 the key opposite to the teeth 7 and is adapted to extendthrough the opening 4 in the nut 2, this lug being adapted to be struckby a hammer or other tool to force the teeth 7 into engagement with thethreads of the bolt. After the key has been driven into engagement withthe threads of the bolt, screws or other suitable fastening elements 9may be passed through openings 10 in the key and alining openings 11 inthe nut in order to prevent accidental disengagement of the key from thenut.

In Fig. 5 of the drawings a modified form of locking key has been shown.This key is of substantially the same construction as the key 5, but isslightly thicker, and instead of the single row of teeth 7, as shown inthe preferred form of the drawings, this key is provided with a doublerow of teeth 12 and 13 respectively, a slot 14 being formed in thearcuately-shaped portion of the key, centrally of the teeth in order toform two rows mentioned.

From the foregoing description taken in connection with the accompanyingdrawings it is thought that the construction and operation of the devicewill be clearly understood and while I have herein shown and describedone specific form of my invention I do not wish to be limited thereto,except for such limitations as the claim may import.

hat is claimed is In combination with a bolt, a nut threaded thereon,said nut having a recess formed therein, said recess being spaced fromthe outer edges of said nut and communicating with the upper face andthe interior bore thereof, a plate seated in said recess, said plateprovided with an extension on its edge adjacent the interior bore ofsaid nut, said extension provided with an arcuate cut-out portion, teethformed in said cut-out portion and normally out of engagement with thethreads of said bolt, said nut provided with an opening, communicatingwith the outer side of said nut, an operating extension formed on saidplate opposite to said first mentioned extension and projecting throughsaid opening, said nut provided with spaced apart openings,communicating with said recess, said plate provided with spaced apartopenings, said openings in said plate being normally out of registrywith the last mentioned openings in said nut,

whereby when said plate is operated to force In testimony whereof Iafiix my signature said teeth into engagement with the threads inpresence of tWo Witnesses.

of saidfbolt, the openings in said plate and JOHN W. VAN ZILE. the lastmentioned openings in said nut Will \Vitnesses:

5 coincide to receive a fastening means sub J. BLAU ELT HOPPER,stantially as described. CALVIN B. SMITH.

Conies of this patent may be obtained for fiire cents each, byaddressing the Commissioner of ratents, Washington, D. G.

